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发明名称
METHOD OF IMPREGNATING SUBSURFACE REINFORCED CONCRETE STRUCTURES,IN PARTICULAR DUCTS,PIPES,RESERVOIRS AND LARGE-SIZE SLABS
摘要
申请公布号
PL139679(B3)
申请公布日期
1987.02.28
申请号
PL19810230835
申请日期
1981.04.25
申请人
发明人
分类号
B28B21/94;C04B;E02D31/02;E04B1/64;(IPC1-7):B28B21/94;B01D13/02
主分类号
B28B21/94
代理机构
代理人
主权项
地址
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